EP1065892A2 - Intelligent network - Google Patents

Intelligent network Download PDF

Info

Publication number
EP1065892A2
EP1065892A2 EP00305055A EP00305055A EP1065892A2 EP 1065892 A2 EP1065892 A2 EP 1065892A2 EP 00305055 A EP00305055 A EP 00305055A EP 00305055 A EP00305055 A EP 00305055A EP 1065892 A2 EP1065892 A2 EP 1065892A2
Authority
EP
European Patent Office
Prior art keywords
service
network
service switching
switching point
nodes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00305055A
Other languages
German (de)
French (fr)
Other versions
EP1065892A3 (en
Inventor
Frank Scott
Darwin Howard
John Storrie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Nortel Networks Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nortel Networks Ltd filed Critical Nortel Networks Ltd
Publication of EP1065892A2 publication Critical patent/EP1065892A2/en
Publication of EP1065892A3 publication Critical patent/EP1065892A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H04Q3/0029—Provisions for intelligent networking

Definitions

  • This invention relates generally to an intelligent network and in particular to a flexible intelligent network and method of operation thereof.
  • TCAP White Book Transaction Capabilities Application Part
  • Solution 2 Default to the lowest common denominator: The functional behaviour of the individual network components is analysed. For example, if one component does not support a function required by the Service Control Processor service, the part of the service which requires that function must not be invoked on the Service Control Processor.
  • Solution 2 Shortcoming: The network operator is not provided with the required functions.
  • Solution 3 Incremental Development on one of the intelligent network component plafform to ensure compatibility for the given configuration.
  • Solution 3 Shortcoming This is a very cumbersome and expensive way to ensure interoperability. Alteration of the behaviour of one of the intelligent network components for a specific configuration is orthogonal to the spirit of having open interfaces driven by standards.
  • a telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
  • a method of operating a telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
  • a program for a computer stored in a computer readable medium, which is arranged, when run on a computer in a telecommunications network including a service control processor and a plurality of network nodes, to cause the computer to operate the network under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
  • a service switching point for use in a telecommunications network including a service control processor and a plurality of network nodes, in which the service switching point is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
  • a service control processor for use in a telecommunications network including said service control processor and a plurality of network nodes, in which the service control processor is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
  • the nodes include service switching points.
  • the behaviour of a service switching point is controllable using service profiles, which govern specific operation within the service switching points.
  • the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
  • the format of information in parameter establishing profiles is also an efficient mechanism for minimisation of provisioned datafill at the Service Switch Point. There is no need to datafill more that the minimum number of profiles, if the profiles are linked in some vendor-specific manner to the specific attribute of the service invocation (e.g. ServiceKey).
  • the telecommunications network 2 includes a service control processor 4 and a plurality of network nodes, in the form of service switching points 6.
  • the network 2 is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching points 6 incorporate a degree of intelligence.
  • the behaviour of a service switching point 6 is controllable using service profiles, which govern specific operation within the service switching points 6, and which are stored in the switching points 6 in memory means 8.
  • the specific operations of the service switching point 6 which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
  • a service profile is not limited in any form or fashion to any particular behaviour nor is it associated with a particular protocol, parameter or operation as it is an extensible concept that can be used to characterise the behaviour of any Service Switching Point.
  • the INAP specification requires that all the available protocol related information is provided to the service plane in the optional parameter stream of the initial request. This is, in many cases an un-necessary overhead as the service platform may only require a few parameters to operate the service and the unused information adds a real time cost to the Service Switching Point and service platform as well as increasing the network overhead of transporting large messages. This is an example of grooming the initial query to contain the relevant agreed parameters.
  • An AMA module is a Bellcore compliant billing format.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
  • Computer And Data Communications (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

A telecommunications network includes a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol. The protocol incorporates a hierarchical control relationship in which the nodes incorporate a degree of intelligence.

Description

Background Of The Invention
This invention relates generally to an intelligent network and in particular to a flexible intelligent network and method of operation thereof.
Field Of The invention
The value of intelligent networks is based in part on the following fundamental beliefs:
  • 1. Rapid Service Deployment: intelligent networks provide the network operator with the ability to rapidly rollout new services, which results in significant market advantage.
  • 2. Vendor Interoperability: intelligent networks allow the network operator easily to deploy network components, such as Service Switching Points (SSP), Service Control Processor (SCP), and Intelligent Peripheral devices (IP) from multiple vendors. The use of intelligent networks should, therefore, result in both a cost reduction and greater choice of solutions.
    • However, neither of these beliefs has been fully realised, due to the difficulty in ensuring functional compatibility between different vendors components, as well as compatibility between components within a given vendor's product portfolio.
    The primary issues which are left un-addressed by currently available intelligent networks include, the following:
  • 1. The set of intelligent network operations and parameters which are supported for a given service. For example: The Service Control Processor service logic places demands on the supported set provided by the Service Switch Point.The Service Switch Point requires a certain information content in the Service control Processor intelligent network messages.There are several aspects of the components functional behaviour which is considered "network specific" or "beyond the scope" of the intelligent network specification.There are several aspects of the intelligent network specification that are vague enough to result in different interpretations and implementations by the intelligent network components.
  • 2. The assumed component behaviour. For Example: If the Service Control Processor does not explicitly instruct the Service Switching Point on how to behave functionally, when is its default behaviour invoked.If the Service Switching Point explicitly provisions some functional behaviour, what happens if the Service Control Processor provides conflicting instructions.In short, what are the rules of engagement, particularly considering that the specification indicates that the Service Control Point is the final control of Service Switch Point functional behaviour.
    • The result is a need for an unexpectedly high level of hand crafting of the operations, parameters and functional behaviour supported by the individual intelligent network components in order to ensure their inter-operability. This may be necessary on a per-service, per-market, or per-configuration basis.
    Often the determination as to whether two components will interact properly is only made as a result of analysis, and may be followed by incremental development on the part of one or both components to ensure interoperability. This difficulty may compromise the perceived benefits of intelligent networks for the network operator.
    Several solutions to this problem have been attempted, with varying degrees of limited success.
    Solution 1: White Book Transaction Capabilities Application Part (TCAP) Context Negotiation: The intelligent network standards proposes a strategy for component/vendor inter-working which is based on the notion of a "Context". This pre-defined context is negotiated between two intelligent network components during the establishment of the TCAP dialogue. In cases where one component is unable to support the Context attempted by the other component it will re-select a less-advanced Context.
    Solution 1 Shortcoming: The problem with Context Negotiation is that it is too limited in addressing all of the potential problems as earlier described. It only allows for the selection of a set of operations and parameters. The permutation and combinations required to address all possible network component behavioural requirements would be immense. In short it is only practical for well-controlled network configurations, where the network operator has defined very specific behaviour. One example is the Austria Telecom network, where a subset of Context Negotiation was mandated by the Telco.
    Solution 2: Default to the lowest common denominator: The functional behaviour of the individual network components is analysed. For example, if one component does not support a function required by the Service Control Processor service, the part of the service which requires that function must not be invoked on the Service Control Processor.
    Solution 2 Shortcoming: The network operator is not provided with the required functions.
    Solution 3: Incremental Development on one of the intelligent network component plafform to ensure compatibility for the given configuration.
    Solution 3 Shortcoming: This is a very cumbersome and expensive way to ensure interoperability. Alteration of the behaviour of one of the intelligent network components for a specific configuration is orthogonal to the spirit of having open interfaces driven by standards.
    Summary Of The Invention
    It is an object of the present invention to address the problem of excessive hand crafting of nodes within a telecommunications network.
    It is a further object of the present invention to address the problem of excessive datafilling of nodes within a telecommunications network.
    According to a first aspect of the present invention there is provided a telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    According to a second aspect of the present invention there is provided a method of operating a telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    According to a third aspect of the present invention there is provided a program for a computer stored in a computer readable medium, which is arranged, when run on a computer in a telecommunications network including a service control processor and a plurality of network nodes, to cause the computer to operate the network under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    According to a fourth aspect of the present invention there is provided a service switching point for use in a telecommunications network including a service control processor and a plurality of network nodes, in which the service switching point is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
    According to a fifth aspect of the present invention there is provided a service control processor for use in a telecommunications network including said service control processor and a plurality of network nodes, in which the service control processor is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
    Preferably, the nodes include service switching points.
    Preferably, the behaviour of a service switching point is controllable using service profiles, which govern specific operation within the service switching points.
    Preferably, the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    It is an advantage of the present invention that the format of information in parameter establishing profiles is also an efficient mechanism for minimisation of provisioned datafill at the Service Switch Point. There is no need to datafill more that the minimum number of profiles, if the profiles are linked in some vendor-specific manner to the specific attribute of the service invocation (e.g. ServiceKey).
    Brief Description Of The Drawings
  • The invention will be better understood from the following description of the a telecommunications network in accordance with the present invention, together with reference to the accompanying drawing, in which Figure 1 illustrates a telecommunications network in accordance with the present invention.
    • Detailed Description
    Referring to the drawings Figure 1, illustrates a telecommunications network 2 in accordance with the present invention. The telecommunications network 2 includes a service control processor 4 and a plurality of network nodes, in the form of service switching points 6. The network 2 is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching points 6 incorporate a degree of intelligence.
    The behaviour of a service switching point 6 is controllable using service profiles, which govern specific operation within the service switching points 6, and which are stored in the switching points 6 in memory means 8.
    The specific operations of the service switching point 6 which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    A service profile is not limited in any form or fashion to any particular behaviour nor is it associated with a particular protocol, parameter or operation as it is an extensible concept that can be used to characterise the behaviour of any Service Switching Point.
    In many cases the INAP specification requires that all the available protocol related information is provided to the service plane in the optional parameter stream of the initial request. This is, in many cases an un-necessary overhead as the service platform may only require a few parameters to operate the service and the unused information adds a real time cost to the Service Switching Point and service platform as well as increasing the network overhead of transporting large messages. This is an example of grooming the initial query to contain the relevant agreed parameters.
    In many Service Switching Points there is a certain level of default call processing behaviour which, in the absence of instructions from other services, will be executed. Within the service provided in collaboration between the Service Switching Point and the service plane this behaviour might not be that which is desired by either the end user or the operator. This behaviour might well be more fully defined in a later issue of the particular Intelligent Network specification but may also be absent. It may also be a requirement of an inter-connection agreement between two or more networks.
    In either case it is essential for the operator to be able to define the behaviour of the Service Switching Point in terms of the appropriate signalling, billing or other activity. This may often require that the default Service Switching Point call processing behaviour be altered to fully effect the service. In the absence of explicit instructions from the service plane then the Service Switching will look to any service profile attributes to determine if it should modify the default call processing behaviour.
    Use of the service profile concept allows the operator the flexibility to control their telecommunications network in the most advantageous manner.
    There follows two examples of the use of programmable intelligent networks.
    Example 1
    Within the Austrian national network the charging of calls is performed by providing meter pulses to the end terminal. As the cost of the call increases, due to various factors the time between pulses decreases. These pulses are provided to the users end equipment where many people have a device that counts the pulses and allows them to determine the current cost of their telephone bill.
    When the Intelligent Network "free-phone" service was deployed, part of the service played an announcement to the caller, indicating that their call was being actioned and they should hang on. As a by-product of this action the default call processing behaviour was to answer the call and this caused the end users meter to begin to increment. The user was being charged for a free phone call.
    By using the Service Profiling the default call processing behaviour may be modified and the call no longer answered.
    Example 2
    When an initial service is requested from an Intelligent Network the operator of the switch often has a preference for capturing certain billing information in certain AMA modules. An AMA module is a Bellcore compliant billing format.
    To aid their downstream billing processing they wish to select the type of module from several optional modules available in the Bellcore specification. By using the Service Profiling concept the operators are able to select the required module and have the intelligent network software populate the required fields. This allows the intelligent network software to influence the default behaviour of the call-processing platform.
    Modifications may be incorporated with out departing from the scope or spirit of the invention.

    Claims (16)

    1. A telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    2. A telecommunications network as claimed in claim 1, wherein the nodes include service switching points
    3. A telecommunications network as claimed in claim 2, wherein the behaviour of a service switching point is controllable using service profiles which govern specific operation within the service switching points.
    4. A telecommunications network as claimed in claim 3, wherein the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    5. A method of operating a telecommunications network including a service control processor and a plurality of network nodes, in which the network is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    6. A method as claimed in claim 5, wherein the nodes include service switching points
    7. A method as claimed in claim 6, wherein the behaviour of a service switching point is controllable using service profiles which govern specific operation within the service switching points.
    8. A method as claimed in claim 7, wherein the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    9. A program for a computer stored in a computer readable medium, which is arranged, when run on a computer in a telecommunications network including a service control processor and a plurality of network nodes, to cause the computer to operate the network under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the nodes incorporate a degree of intelligence.
    10. A program for a computer as claimed in claim 9, wherein the nodes include service switching points.
    11. A program for a computer as claimed in claim 10, wherein the behaviour of a service switching point is controllable using service profiles which govern specific operation within the service switching points.
    12. A program for a computer as claimed in claim 11, wherein the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    13. A service switching point for use in a telecommunications network including a service control processor and a plurality of network nodes, in which the service switching point is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
    14. A service switching point as claimed in claim 13, wherein the behaviour of a service switching point is controllable using service profiles which govern specific operation within the service switching points.
    15. A service switching point as claimed in claim 14, wherein the specific operations of the service switching point which are governed by the service profiles include: Parameters for Initial Query, or subsequent response; Trigger detection points supported; Billing behaviour; SCCP GTT network routing strategy; Re-Triggering capability.
    16. A service control processor for use in a telecommunications network including said service control processor and a plurality of network nodes, in which the service control processor is arranged to operate under a programmable intelligent network protocol, incorporating a hierarchical control relationship in which the service switching point incorporate a degree of intelligence.
    EP00305055A 1999-07-02 2000-06-14 Intelligent network Withdrawn EP1065892A3 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    US09/346,321 US6728783B1 (en) 1999-07-02 1999-07-02 Intelligent network
    US346321 1999-07-02

    Publications (2)

    Publication Number Publication Date
    EP1065892A2 true EP1065892A2 (en) 2001-01-03
    EP1065892A3 EP1065892A3 (en) 2003-06-04

    Family

    ID=23358866

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP00305055A Withdrawn EP1065892A3 (en) 1999-07-02 2000-06-14 Intelligent network

    Country Status (3)

    Country Link
    US (1) US6728783B1 (en)
    EP (1) EP1065892A3 (en)
    CA (1) CA2312500A1 (en)

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2008110294A3 (en) * 2007-03-13 2009-04-30 Deutsche Telekom Ag Method and device for producing fixed-mobile convergent telecommunications services

    Families Citing this family (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7174009B1 (en) 2004-06-21 2007-02-06 Sprint Spectrum L.P. Elimination of inoperable service node during call set up
    US11004090B2 (en) * 2005-12-24 2021-05-11 Rich Media Club, Llc System and method for creation, distribution and tracking of advertising via electronic networks
    WO2007097670A1 (en) * 2006-02-27 2007-08-30 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for communication
    WO2012151649A1 (en) * 2011-05-12 2012-11-15 Ana Paula Ameruso Abulasan Subsidised telephone call and multimedia message system

    Family Cites Families (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    AU691509B2 (en) * 1993-06-28 1998-05-21 Bellsouth Intellectual Property Corporation Mediation of open advanced intelligent network interface for public switched telephone network
    US5479495A (en) * 1993-10-01 1995-12-26 U S West Advanced Technologies, Inc. Method and system for automatically accessing and invoking switch-based services in an advanced intelligent network
    FI98971C (en) * 1994-11-01 1997-09-10 Nokia Telecommunications Oy Procedure for deploying intelligent network services in a mobile communication network as well as a mobile communication network
    US5761290A (en) * 1995-10-11 1998-06-02 Bell Atlantic Network Services, Inc. Alternate service activation
    US5991389A (en) * 1996-06-13 1999-11-23 Northern Telecom Limited Programmable service architecture for call control processing
    US5862129A (en) * 1996-12-23 1999-01-19 Dsc Telecom L.P. Apparatus and method for the detection and elimination of circular routed SS7 global title translated messages in a telecommunications network
    US6038305A (en) * 1997-03-28 2000-03-14 Bell Atlantic Network Services, Inc. Personal dial tone service with personalized caller ID
    US6167119A (en) * 1997-03-28 2000-12-26 Bell Atlantic Network Services, Inc. Providing enhanced services through SIV and personal dial tone
    US6047059A (en) * 1997-08-21 2000-04-04 Alcatel Usa Sourcing, L.P. System and method for communicating transaction capabilities application part information

    Cited By (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    WO2008110294A3 (en) * 2007-03-13 2009-04-30 Deutsche Telekom Ag Method and device for producing fixed-mobile convergent telecommunications services

    Also Published As

    Publication number Publication date
    EP1065892A3 (en) 2003-06-04
    US6728783B1 (en) 2004-04-27
    CA2312500A1 (en) 2001-01-02

    Similar Documents

    Publication Publication Date Title
    US6104797A (en) Method and system for an intelligent partitioned communication system
    EP1246433B1 (en) Communication terminal handling user to user information received during a call
    CA2053594C (en) Communication system having isdn (integrated services digital network) signaling capability
    CA2283861C (en) System and method for managing feature interaction of telephone services
    US5864614A (en) Intelligent peripheral and network control
    US7039173B2 (en) Management of performance of intelligent network services
    US6011845A (en) Method and system for two-way call holding using an intelligent communication device
    US7212621B1 (en) Feature interactions
    US6049600A (en) Method and system for an intelligent plug-in partitioned communication system
    US6728783B1 (en) Intelligent network
    GB2318701A (en) Intelligent network protocol gateway
    WO2005045555A2 (en) Hybrid intelligent network
    EP1205079B1 (en) Method and system for signaling in a telecommunication system
    US6584184B1 (en) Method and system for an intelligent partitioned communication system
    CN1168213A (en) Method for Realizing Continuous Call in Intelligent Network Call
    CN1330838A (en) Initiation of services in telecommunications network
    EP1248445A1 (en) Call appearance shared by PSTN phone and Voice over IP phone
    US6393120B1 (en) Arrangement in a network structure
    Rieken et al. Provision of integrated services-the Service Node approach
    JP2000165453A (en) Gateway between data network and service network
    AU741156B2 (en) Method for a message service in telephone systems containing analog circuits
    EP1087595A2 (en) Network connection control
    CN100499702C (en) Method for realizing intelligent network number collection
    EP1757111B1 (en) Method and system for establishing communications
    JP3642280B2 (en) Priority communication system and priority communication method

    Legal Events

    Date Code Title Description
    PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

    Free format text: ORIGINAL CODE: 0009012

    AK Designated contracting states

    Kind code of ref document: A2

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

    AX Request for extension of the european patent

    Extension state: AL LT LV MK RO SI

    RIN1 Information on inventor provided before grant (corrected)

    Inventor name: STORRIE, JOHN

    Inventor name: DARWEN, HOWARD

    Inventor name: SCOTT, FRANK

    RAP1 Party data changed (applicant data changed or rights of an application transferred)

    Owner name: NORTEL NETWORKS LIMITED

    17P Request for examination filed

    Effective date: 20031204

    AKX Designation fees paid

    Designated state(s): DE FR GB

    17Q First examination report despatched

    Effective date: 20040420

    STAA Information on the status of an ep patent application or granted ep patent

    Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

    18D Application deemed to be withdrawn

    Effective date: 20050811